Improvement in railway gates



GEORGE A. KRISTIE 8L SAMUEL HORN;

lmprovement inBailway-Gates.

T Patent ed June 1!,1-872.

Q M K @ttumgs.

UNITED STATES GEORGE AVKRISTIE AND SAMUEL HORN, OF FORT SENECA, OHIO.

IMPROVEMENT IN RAILWAY GATES.

Specification forming part of Letters Patent No. 127,775, dated June 11,1872.

Specification describing a new and useful Improvement in AutomaticGates, invented by GEORGE A. KRISTIE and SAMUEL HORN,

of Fort Seneca, in the county of Seneca and State of Ohio.

Our invention is an improvement in the class of railroad gates designedto be operated automatically by means of a spirally-grooved or flangedroller, so arranged as to be acted on by the wheels of the locomotive.We place the roller outside the track or rail, but secure it thereto,and connect it and the pivoted gate by a link or bar, which, when thegate is closed, is either vertical or inclined over the flanged roller,whereby we secure the greatest leverage on the gate and thus enable itto be raised instantly and without liability to injury, as in the caseof railroad gates ordinarily used.

In the accompanying drawing, Figure 1 represents a top or plan view.Fig. 2 is vertical cross-section of Fig. 1 taken on the line was.

Similar letters of reference indicate correspending parts.

A A are the rails of a railroad track. B is a roller which is supportedon journals or pivots in the brackets O C. These brackets are securedthrough the rails by screw-nuts D, as seen in the drawing. E is theflange or web rigidly attached to the roller or forming a part thereof.F represents a gate bar or barrier of one or more sections, the rail Gof which extends back from the track and roller, and is connected, by ajointpin, H, to an. upright, 1. This upright is made double or in twoparts, and the rail G is confined between them by the pin H. J is an armattached to the roller B. K is a bar which connects the armJ with therail G of the gate. L represents the carwheels.

As seen in the drawing the gate is closed and resting on the rails. Theobject is to raise the gate so that the car can pass, and to have thegate close directly after the carpasses. The former operation isperformed by the wheels of the car passing over the curved flange or webE; the latter is done by gravity or weight of the gate. When the gate isclosed the ends N N of the flange E are horizontal or lie fiat, and onthe same plane as the top of the rail, but the flange curves upward fromthe ends so that the central portion of the flange is on the top of theroller, thus curving over one-fourth of the diameter of the roller, andsufliciently to throw the middle portion of the flange from a verticalto a horizontal position, as the car-wheel passes over it. This turnsthe roller one-fourth of a revolution and throws up the arm J, theconnecting-bar K, and the gate into the position seen in dotted lines,the latter being in nearly a vertical position, as seen, but having itscenter of gravity toward the roller, so that when the pressure is movedfrom the flange the gate descends by its own gravity and closes thetrack, as seen in the drawing.

0 O are cushions of rubber or other elastic material, which the gatestrikes when it is raised, and also when it falls, to relieve theconcussion.

In this example of our invention we operate a double gate and apply theinvention to the track of a railroad, but we do not confine ourselves tothis arrangement, nor to this particular application, as the roller andcurved flange or web may be used in operating signals and switches, aswell as gates on ordinary roads.

Having thus described our invention, we claim as new, and desire tosecure by Letters Patent The arrangement of the link or bar K with thegate G F pivoted to the uprights I, and with the arm J of theflanged-rollerB, located outside the track or rail, as shown anddescribed, whereby the said bar will assume a vertical or inclinedposition over the roller, when the gate is closed, for the purposespecified.

GEO. A. KRISTIE.

SAMUEL HORN.

Witnesses:

J OHN B. ZIMMERMAN, D. DUBFEE.

